if you like the sound of drag pipes their great, plus you get some bottom end power, when I picked up my shovel it had drags with baffles in them, so I took them out and it had no power, popping and coughing, no matter what I did, then my buddy turned me on to the power cones, now it runs better then ever, and sounds great, ( just my opinion but the shovels just sound better unbaffled)